{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell type", "DNA", "protein", "RNA", "cell line"], "input": "Binding of the 65-kDa plus 50-kDa heterodimer to the HIV-1 enhancer can be negatively regulated in monocytes , providing one mechanism restricting HIV-1 gene expression ."}
{"cell type": ["monocytes"], "DNA": ["HIV-1 enhancer", "HIV-1 gene"], "protein": ["65-kDa", "50-kDa heterodimer"], "RNA": [], "cell line": []}